Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file.exe

  • Size

    264KB

  • Sample

    230504-cey6babe6z

  • MD5

    3b5d5728a6d74a0f0f48c5c943443b74

  • SHA1

    d57fb768113b969396996a88681d42c4d4c227bd

  • SHA256

    3b3f397dd74ad22804f323c0bb49e3d99ac5a5423d0b3787a3bd71fc8abe9e6e

  • SHA512

    32befa076f7e9daff2f271244a8bb54ceacff5f04141b32860dc30ebd81d6ca38693a6c1e9ef037268310d046fbac81702c72817e68ac3f3d9046e8a3516053f

  • SSDEEP

    3072:3lM2SprixzpyHisBXhylChgU1mY0G31CFEnttis57xc0MMIECuiZQE0/uWm:KVk94His5hAXymJ06S+06ECui501m

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      264KB

    • MD5

      3b5d5728a6d74a0f0f48c5c943443b74

    • SHA1

      d57fb768113b969396996a88681d42c4d4c227bd

    • SHA256

      3b3f397dd74ad22804f323c0bb49e3d99ac5a5423d0b3787a3bd71fc8abe9e6e

    • SHA512

      32befa076f7e9daff2f271244a8bb54ceacff5f04141b32860dc30ebd81d6ca38693a6c1e9ef037268310d046fbac81702c72817e68ac3f3d9046e8a3516053f

    • SSDEEP

      3072:3lM2SprixzpyHisBXhylChgU1mY0G31CFEnttis57xc0MMIECuiZQE0/uWm:KVk94His5hAXymJ06S+06ECui501m

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • XMRig Miner payload

      miner

    • Creates new service(s)

      persistence

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks